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16 Cards in this Set

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  • Back
Cell
the fundamental unit of living matter
Cytoplasm
the fluid portion of a cell, bounded by the cell membrane but excluding the nucleus (if present)
DNA
deoxyribonucleic acid, the hereditary material of cells and some viruses
Ecology
the study of organisms in their natural environments
Ecosystem
organisms plus their nonliving environment
Enrichment culture
a method for isolating microoorganisms from nature using specific culture media and incubation conditions
Enzyme
a protein catalyst that functions to speed up chemical reactions
Habitat
the location in an environment where a microbial population resides
Koch's Postulates
a set of criteria for proving that a given microorganism causes a given disease
Metabolism
all biochemical reactions in a cell
Microorganism
a microscopic organism consisting of a single cell or cell cluster, including the viruses
Pathogen
a disease-causing microoorganism
Pure culture
a culture containing a single kind of microorganism
RNA
ribonucleic acid, involved in protein synthesis as messenger RNA, transfer RNA, and ribosomal RNA
Spontaneous generation
the hypothesis that living organisms can originate from nonliving matter
Sterile
absence of all living organisms and viruses